<template>
  <el-container class="home_container">
      <!--头部区域-->
    <el-header>
        <div>
            <img src="../assets/1.jpg" alt="">
            <span>电商后台管理系统</span>
        </div>
        <el-button type="info" @click="loginOut">退出</el-button>
    </el-header>
    <!--主体-->
        <el-container>
            <!--侧边栏-->
            <el-aside :width="isCollapse ? '64px' : '200px'">
                <div class="toggle-button" @click="toggleCollapse">|||</div>
                <!--侧边栏菜单区域-->
                <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF"
                 :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" :router="true"
                 :default-active="activePath">
                    <!--一级菜单-->
                    <el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
                        <!--一级菜单的模板区-->
                        <template slot="title">
                            <!--图标-->
                            <i :class="iconsObj[item.id]"></i>
                            <!--文本-->
                            <span>{{item.authName}}</span>
                        </template>

                        <!--二级菜单-->
                        <el-menu-item :index="'/' +subItem.path" v-for="subItem in item.children"
                         :key="subItem.id" @click="saveNative('/' +subItem.path)">
                            <!--二级菜单的模板区-->
                            <template slot="title">
                                <!--图标-->
                                <i class="el-icon-menu"></i>
                                <!--文本-->
                                <span>{{subItem.authName}}</span>
                            </template>
                        </el-menu-item>
                    </el-submenu>
                </el-menu>
            </el-aside>
            <!--右侧主体-->
            <el-main>
                <router-view></router-view>
            </el-main>
        </el-container>
  </el-container>
</template>

<script>
export default {
    data(){
        return{
            menulist: [],
            iconsObj: {
                '125': 'el-icon-s-custom',
                '103': 'el-icon-s-home',
                '101': 'el-icon-s-shop',
                '102': 'el-icon-s-order',
                '145': 'el-icon-s-data'
            },
            //是否折叠
            isCollapse: false,
            //被激活的链接地址
            activePath: ''
        }
    },
    created(){
        this.getMenuList(),
        this.activePath = window.sessionStorage.getItem('activePath')
    },
    methods: {
        loginOut(){
            window.sessionStorage.clear(),
            this.$router.push('/login')
        },
        //获取所有数据
        async getMenuList(){
            const { data: res } = await this.$http.get('menus')
            if(res.meta.status !== 200) return this.$message.err(res.meta.msg)
            this.menulist = res.data
            console.log(res)
        },
        //点击按钮，切换菜单的折叠与展开
        toggleCollapse(){
            
            this.isCollapse = !this.isCollapse
        },
        //保存链接激活状态
        saveNative(activePath){
            window.sessionStorage.setItem('activePath',activePath)
            this.activePath = activePath
        }
    },
}
</script>

<style lang="less" scoped>
.home_container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: white;
    font-size: 20px;
    > div{
        display: flex;
        align-items: center;
        span{
            margin-left: 15px;
        }
    }
    img{
        width: 100px;
    }
}

.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: none;
    }
}

.el-main{
    background-color: #eaedf1;
}
.iconfont{
    margin-right: 10px;
}
.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 24px;
    color: white;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>